5 to 6 Inch Duct Adapter - Round Duct Fitting Pipe Increaser/Reducer PVC DWV (Drain, Waste and Vent) Coupling Plastic, White

Could also make these with a thicker outside diameter.

works great

Almost perfect fit, delivered on time

Worked great with the offset design options with the ventilation project.

Thin and the 5" was too small and the 6" was too big. Total waste of time.

I needed to reduce 6 inches to 5 inches but this was almost 1/2 off in both dimensions. I used a strip of foam tape to compensate. Compared to the 6 to 4 reducer I bought previously for the other end of the fan I was using these on, the plastic 6 x 5 was flimsier material.

Great product Consider adding internal threads for ducts

It was exactly what I was expecting

sehr gut, wie beschrieben. würde ich wieder kaufen. mfg

Mi è servito per passare dal tubo del condizionatore portatile da 150mm di diametro a una condotta da 200 onde non caricare troppo la ventola di espulsione dell'aria calda. il risultato finale è stato eccellente.

Passte nicht, nicht zu empfehlen.

USE IT OT REDUCE THE OUTLET ON MY THICKNESS PLANER TO FIT 4 INCH HOSE FROM DUST COLLECTOR

Item was listed as 125mm but is actually 131mm and therefore incompatible for intended use. annoying.